code 36 and 65,,

[94GMC2500]

I have a 95 K3500, been having trouble with it stalling when cold and skipping when driving it. I checked the codes today and got code 36 injection pulse width error response time long and code 65 APP 3 circuit range fault. Is this all related or do I have a bunch of different things going on? I have had 4 used PMD,s on it and changed the shut off solenoid on the pump. I thought the solenoid fixed it as it ran great for 3 days then stalling when cold came back.:mad: I should say that last week I tried starting it with all the used PMD,s I had [5 of them] and one was dead, could this have set code 36?

[Robyn]

Could be related.

The 36 is usually a PMD dying.

Can also be related to the fuel solenoid in the IP getting flakey.

Try adding a a quart of motor oil to the fuel tank or a bottle of top grade diesel treatment and see if it stops giving the code.

[94GMC2500]

I just ordered a new flight systems PMD, I will see if that fixes the problem. Does code 65 mean throttle pedal assy is going bad?